초록 ▼

An X-ray simulator has an X-ray source and collimator connected to the end of a cantilevered horizontal arm mounted on a gantry that rotates about a horizontal axis and extends along a patient supporting table. The horizontal arm has an asymmetrical cross section that causes the arm and therefore th

An X-ray simulator has an X-ray source and collimator connected to the end of a cantilevered horizontal arm mounted on a gantry that rotates about a horizontal axis and extends along a patient supporting table. The horizontal arm has an asymmetrical cross section that causes the arm and therefore the X-ray source and collimator to deflect by differing amounts as the gantry rotates. To compensate for the varying displacement of the X-ray target point and to adjust the position of the target point along the rotation axis of the gantry, the collimator is pivoted in one direction or the other in accordance with the amount of rotation of the gantry axis.

대표청구항 ▼

Radiant energy apparatus comprising: a patient supporting table, a machine support, an energy beam source, a support arm carried by said machine support, said arm extending along and spaced from a portion of said table, and means for mounting said energy beam source to said support arm to enable sai

Radiant energy apparatus comprising: a patient supporting table, a machine support, an energy beam source, a support arm carried by said machine support, said arm extending along and spaced from a portion of said table, and means for mounting said energy beam source to said support arm to enable said energy beam source to project a target point along an energy beam axis toward an isocenter point having a predetermined position with respect to said machine support, said means for mounting comprising adjustable means for automatically adjusting the direction of said energy beam axis relative to said support arm to decrease displacement between said projected target point and said isocenter point, said support arm being mounted to said machine support for rotation about a rotation axis extending through said isocenter point, and said adjustable means comprising means for adjusting the direction of said energy beam axis by an amount related to rotation of said support arm.